Sildenafil vs Vancomycin

## Sildenafil vs Vancomycin: Overview

This comparison examines the pharmacological differences between **Sildenafil** and **Vancomycin**.

## Mechanism of Action

**Sildenafil**: Selective PDE5 inhibitor increasing cGMP.

**Vancomycin**: Glycopeptide antibiotic inhibiting cell wall synthesis by binding D-Ala-D-Ala terminus of peptidoglycan precursors.

## Pharmacokinetics

**Half-life**: Sildenafil — 4 hours; Vancomycin — 4-6 hours.

## Chemical Properties

**Molecular Formula**: Sildenafil — C22H30N6O4S; Vancomycin — C66H75Cl2N9O24.

**Molecular Weight**: Sildenafil — 474.5800 g/mol; Vancomycin — 1449.2500 g/mol.

**Type**: Sildenafil — Small molecule; Vancomycin — Small molecule.